Physical interface

● RJ-45

A. WAN X 1 for connecting to HUB or

ATU-R directly

B. LAN X 1 for PC connection

● RJ-11

A. Phone X 1 for ATA-171

B. Phone X 2 for ATA-172

C. Phone X 1, Line X1 for ATA-171P/

ATA-171M

● Dimension: 9.9 X 9.9 X 3.2 cm

Network and Protocol

● SIP v1(RFC2543), v2(RFC 3261)

A. Outbound proxy